Mad prices for f31

I was considering giving my f31 to my mum and buying a f200 for myself. After looking at some of the high ISO comparison shots I changed my mind, I'll get a f200 for my mum and keep the 31. While looking on ebay I saw a couple of 31s on sale. The used one sold for £195 +10 postage!!! The unused one sold for £231!! That's more than you would pay for a Minolta 7D and twice what I paid for mine two years ago.